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<div class=ts108p0><span class="ft0p108"> </span></div>
<div class=ts108p1><span class="ft0p108">Gravitybox Schedule Primer<span class="ft1p108"> </span></span></div>
<div class=ts108p3><span class="ft0p108">Page 106&nbsp; </span></div>
<div class=ts108p7><span class="ft2p108"> </span></div>
<div class=ts108p8><span class="ft3p108"> </span></div>
<div class=ts108p9><span class="ft4p108">1998&#45;2004 Gravitybox Software LLC<span class="ft3p108"> </span></span></div>
<div class=ts108p13><span class="ft5p108">Clusters </span></div>
<div class=ts108p15><span class="ft6p108">There is a way to group appointments without creating a recurrence pattern. When two </span></div>
<div class=ts108p17><span class="ft6p108">or more appointments have the same GroupId they are displayed with a small </span></div>
<div class=ts108p18><span class="ft6p108">recurrence icon next to each of them. This defines the group. However there are times </span></div>
<div class=ts108p19><span class="ft6p108">when you may wish to logically group or cluster appointments without showing any </span></div>
<div class=ts108p20><span class="ft6p108">icons relating to the cluster. To provide this functionality, each appointment has a </span></div>
<div class=ts108p22><span class="ft6p108">&#147;ClusterId&#148; property that has an initially unique value. You may change this to any value </span></div>
<div class=ts108p23><span class="ft6p108">you wish. If you give the same key to more than one appointment, these appointments </span></div>
<div class=ts108p24><span class="ft6p108">are said to be in a cluster. The ScheduleItems collection has a &#147;RemoveCluster&#148; method </span></div>
<div class=ts108p26><span class="ft6p108">that may be invoked to remove a cluster of appointments at the same time. This </span></div>
<div class=ts108p27><span class="ft6p108">eliminates the cumbersome operation of looping through the ScheduleItems collection </span></div>
<div class=ts108p28><span class="ft6p108">and removing each individually. Also a Schedule object has a &#147;GetClustered&#148; method </span></div>
<div class=ts108p30><span class="ft6p108">that will return a collection of appointment indexes of appointments with the specified </span></div>
<div class=ts108p31><span class="ft6p108">ClusterId. This is useful to get a collection of indexes that may be used to access the </span></div>
<div class=ts108p32><span class="ft6p108">individual appointment objects in the ScheduleItems collection. </span></div>
<div class=ts108p35><span class="ft6p108"> </span></div>
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